Image from ?A Starved Soul. [A novel.]?, 001219604
Author: FERMOR, W. Lerwick.
Page: 174
Year: 1888
Place: London
Publisher: Wyman & Sons
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This half semester class will present an introduction to macroeconomic modeling, particularly economic growth. It will focus both on models of economic growth and their empirical applications, and try to shed light on the mechanics of economic growth, technological change and sources of income and growth differences across countries.

Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative Commons License (Attribution-NonCommercial-ShareAlike). For further information see https://ocw.mit.edu/terms/index.htm

Wrought iron contains a very low amount of carbon. The resulting microstructure is therefore virtually all of the ferrite phase, since upon reaching the eutectoid temperature virtually all of the austenite will have transformed to ferrite. Some stringers of slag remain trapped in the solidified product.

Image from ?Stella?s Story. A Venetian tale ? With eight illustrations by Paul Woodroffe?, 000853292
Author: DALE, Darley pseud. [i.e. Francesca Maria Steele.]
Page: 176
Year: 1897
Place: London
Publisher: J. S. Virtue & Co.
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This is a transmission electron micrograph taken at 200 kV, from a thin foil sample of "302AA" austenitic stainless steel. The sample was cold-deformed by rolling and then annealed at 704 °C for one hour. The image shows a beautiful picture of annealing twins. Notice how the ends of annealing twins are flat, the shape being determined by a minimisation of interfacial energy. Mechanical twins, by contrast, are lenticular (lens like) with sharply pointed ends to minimise the strain energy due to the twinning shear. Annealing twins do not cause any deformation so strain energy minimisation is not an issue. This is also the reason why there is no strain field contrast visible at the tips of the annealing twins. Source: http://www.msm.cam.ac.uk/phase-trans/abstracts/annealing.twin.html.

Image from ?The Colliery Manager?s Handbook ? Second edition, revised, with additions?, 002757962
Author: PAMELY, Caleb.
Page: 533
Year: 1893
Place: London
Publisher: C. Lockwood & Son
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Open the page in the British Library?s itemViewer (page: 000533)
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Image from ?[South Australia: its history, production and natural resources, etc. [With plates and maps.]]?, 003518734
Author: STOW, Jefferson Pickman.
Page: 187
Year: 1884
Place: Adelaide
Publisher: E. Spiller
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Image from ?The Sao?ne. A summer voyage ? With ? illustrations by J. Pennell, etc?, 001578053
Author: HAMERTON, Philip Gilbert.
Page: 102
Year: 1887
Place: London
Publisher: Seeley & Co.
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Image from ?The History of Hampton Court Palace ? Illustrated, etc?, 002093005
Author: LAW, Ernest.
Volume: 02
Page: 43
Year: 1885
Place: London
Publisher: G. Bell & Sons
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6.828 teaches the fundamentals of engineering operating systems. The following topics are studied in detail: virtual memory, kernel and user mode, system calls, threads, context switches, interrupts, interprocess communication, coordination of concurrent activities, and the interface between software and hardware. Most importantly, the interactions between these concepts are examined. The course is divided into two blocks; the first block introduces an operating system, xv6, which runs on x86 SMPs and provides the basic Unix semantics of Unix v6. The second block of lectures covers important operating systems concepts invented after Unix® v6, which was introduced in 1976.

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Content within individual OCW courses is (c) by the individual authors unless otherwise noted. MIT OpenCourseWare materials are licensed by the Massachusetts Institute of Technology under a Creative Commons License (Attribution-NonCommercial-ShareAlike). For further information see http://ocw.mit.edu/terms/index.htm

Image from ?The Golden Magnet: a tale of the Land of the Incas, etc?, 001215674
Author: FENN, George Manville.
Page: 192
Year: 1884
Place: London
Publisher: Blackie & Son
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